A Glowing Heart String Art
It has two directions of strings, vertical and diagonal to give the impression of glowing.
Print at 0.2mm layer height. If using Bambu Studio set your wall generator to Arachne.
You can also scale it down to 80% and print at 0.16mm layer height.
I have included a multi-colour set consisting of frame (inc heart) and two sets of strings. I have also attached a single complete file.